I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
fellies felloes follies fillies fells flies fellas filles folles follis fellahs fellows failles feeless feels flees flues fuels files fills floes ghillies fulls falls folios fillos falsie folious valleys follows foliose fallows flossie volleys floosie floozie fils flus ghoulies vales voles flaws floss fleas fails filos fools vills veals veils foals foils flows fowls flews flays fouls fleys valise foleys voiles veloce flossy villas floosy fleece fleecy villus ghylls values fallacy phallus phyllos villose villous vowless
ballies challies billies dallies sallies collies fellies tellies dollies fillies gullies willies bellies nellies hollies sullies mollies killies gillies allies chillies wallies cullies dillies wellies dellies bullies rallies woollies kellies ghillies gallies lollies tallies jellies jollies sillies follies lies dalles challis volleys halloes goalies lieus tailless doilies muhlies soilless relies tulles wheelies belies colies belles rouilles callees plies molies malleus bailies galleys coalless dailies helloes toolless failles allees sailless mealies goalless polies mulleys heelless doylies chilies holies alleys milles ghoulies pulleys hulloes follis tuilles bialies coolies hilloes mallees soulless tallis felloes mealless cullis tailles rilles keelless valleys lilies milieus mailless walies flies pollees doolies gulleys filles quillais folles holloes selles boulles woolies wheelless chillis les lis
fell fella fellah felloe fellow felly